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"13.81". BLICTHTON;V

TRACK BOLT LOCK.

No. 289,379. Patented Depll, 1888.

f U VH Ilm' i I wir J I i UNITED STATES PATENT OFFICE.

I). FRANKLIN BLIGHTON, OF BUFFALO, NEV YORK.

TRACK-BOLT LOCK.

lSPECIFICATION forming part of Letters Patent No. 289,379, datedDecember 4, 1883.

Applicaiicn lcd May 19, 1883. (No model.)

To @ZZ whom` it may concern:

Be itknown that I, D. FRANKLIN BLIGHTON, a citizen of the United States,residing in Buffalo, in the county of Erie and State of New York, haveinvented certain new and useful Improvements in Track-Bolt Locks, ofwhich the following is a specification.

My invention relates to a certain means for locking a track-bolt, andwill be fully and clearly hereinafter shown and described by referenceto the accompanying drawings, in which- Figure lis a horizontal sectionthrough the device and a portion of the rail and iish-plates. Fig. 2 isalso a horizontal section through the device and through a portion ofthe rail and fish-plates, showing a modified form of the device adaptingthe bolt to be used asecond time.

. Fig. 3 is an end view showing the device together. Fig. 4 isa faceview of the washer, a section of which is shown in Fig. 2. Fig. 5 is aninside view of the nut, and Fig. 6 is a side elevation of a portion of ailshplate- The rail a is of the ordinary construction, and is providedwith the iishplates a the plate a2 being provided with a recess or`depression, c3, adapted to receive the part a of is provided with thenut c5, so as to prevent it from turning. The part a of said nut isshown in the form of an oval; but any other convenientform to preventthe nut from turning will answer. It a screw-thread adapted to f receivethe bolt c, as shown. (See Figs. l and 2.

The bolt c is provided with an enlargement, c, a little larger than thehole through which it passes. cL is the head ot1 the bolt. It is madesquare, or of any other suitable shape adapting it to receive awrenchfor turning it. In'Fig. 2 I have shown a second enlargement, c`,`on thebolt,wliich is only used after the bolt has been withdrawn from thefish-plate and it is necessary to use it again; as. the hole in thiscase would be too large to-use the bolt with the rst enlargement, thewasher c4 is taken oft' and the second enlargement forced into the holein the islrplate.

In operating with this invention, the boltis passed ,through thefish-plate and rail and secured into the' stationary or iixed nut a5until the enlargement c or c3 is forced into the hole in the iishplate,in which position it is so tightly held that it cannot be moved exceptwith a wrench and the use of considerable force.

I claim as myinvention l. A track-lock bolt provided with anenlargement, c', slightly larger than the hole it is made to enter, incombination with the fish plates and rail and a stationary or iiXed nut,substantially as and for the purposes described:

2. The combination of the bolt c, having an enlargement, c', a secondenlargement, c, and a washer, et, with the ish-plates and rail and astationary or fixed nut, as and for the purposes specified.

D. FRANKLIN BLIGHTON. y

XVitnesses:

lT. M. CALDWELL, JAMES SANGSTER.

t. i 1 i u

